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Linux/Windows-friendly email gateway bundling anti-spam and anti-virus layers for existing mail servers.

Why it is included

GPLv3 gateway often cited for small-org mail hygiene without replacing Exchange/Postfix outright.

Best for

Small IT teams adding a filtering front-end to legacy SMTP infrastructure.

If you use Windows, Mac, or paid tools

Mail gateway alternative to Mimecast slices and Barracuda appliances for self-hosted filtering.

Strengths

  • All-in-one gateway story
  • Pre-tuned rule stacks
  • VM/ISO delivery options

Limitations

  • Last major activity several years ago—validate for your distro

Good alternatives

Rspamd · MailScanner · Proxmox Mail Gateway

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